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J. GRAY.

Ice Cream Freezer.

Patented sept. 10,l 18677.

tait@ gratte aient @Hita JHN GRAY, OF MILWAUKEE, WlSCONSlN.

Letterslatent No. 58 734 (lated Se Member l0, 1867.

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IMPROVED IUE- CREAM FREEZERL TG ALL WHOM IT MAY CONGERN:

Be it 'known that I, JOHN GRAY, of Milwaukee, in the county of Milwaukee, and State of Wisconsin, have invented certainA new and useful Improvements in Ice-Cream Freezers, of which the following is a full, clear, and exact description, reference being had 4-to the accompanying drawing, forming part of this specification, and in which-f Figure l represents an end elevation or"Y an icc-cream freezer constructed according to my improvement.

Figure 2, a vertical longitudinal section of the same.

Figure Spa. view in perspective of ascraper or gatherer used in connection with the machine.

Similar` letters of reference indicate corresponding parts. l

The nature of my invention consists in the combination with the freezing-cylinder oi' a roller for operation within the cylinder; likewise-in a certain sockcted suspension of said roller and support of it against the interior of the cylinder by a spring; and furthermore in a novel combination and action of a gatherer or scraper to the cylinder for collecting the iced cream or milk therein, all substantially as hereinafter described.

, Referring to the accompanying drawing, A A is a box or case, or upper and lower sections, constituting, when united, a box or case, both scctionsbeing suitably lined and made close at their one cud, but with semi` circular openings at their opposite end, which form, when the two sections are closed the cnc upon the other by,

say, a hingedl attachment ci' the upper section A, to the lower section A, a circular opening cr neck, in which is arranged a series of anti-friction or carrying rollers a d for support, at its orn4 ond, of a horizontally arranged or but slightly inclined and rotating, say, metallic fro'ezingor iping-eylinder 13that 11a-s a necked construction, ZJ, at such end to run upon the rollers, anldis closed by'a lid, C, while its other ond may, he carried by a gudgeon or shaft, c, for setting the freezer or cylinder in motion hy means of a crank, d, or pulley, as preferred. The upper section is provided with a hopper, D, at top, covered, it may he, by a. lid, for insertion of the frigeriiic mixture, which is thus allowed to pass round and lie within an annular space, E, surrounding thc cylinder B The cream or milk is admitted through the neck il, ou removing the 4lid C, to any depth in the cylinder not exceeding in height the bottom of the neck oropening I), more cream or` milk being added, if necessary, from time to time, While the cylinder is in motion, as previous supplies thereto become frozeng F is a wooden or other suitable roller arranged to occupy an upper longitudinal position within the cylinder, in` contiguity to its interior,

` in which position it is held or supported in a free or adjustable manner by, say, hanging it through trunuions in a frame or holder made up of hars or frame pieces G G bolted together, as at c, and `foi-lining a eocketjoint er clip to or on a cross-piu,f, made fast to the end of a lever, H, which is arranged to project through a slot in the cylinder cover and through a slotted guide, r, made fast to the upper hox section A. Thus protruding through the freezing-cylinder, the outer end portionof said lever Il is bent upward and made to bear, by a cross-pin or gndgeons, on or in a socket, 7i, ci` a fixed arm, I, that further carries or has working through it e. vertical screw, J, to give adjustahility to the force or tension ot' n. spring, l, on which the-lever H is :nadere bear or rest outsideof the freezing-cylinder and its box. The socketed attachment of the lever H to the roller Aframe or holder G G `should be such as, while allowing of the requisite freedom in play to the roller, the latter or'its holder will not become detached from said lever, which, ou opening the lid C, may be lifted out of the cylinder together with the roller by releasing hold of the spring K on said lever and 'unshipping it from the socket i. supposing the roller F to be in place, as represented, the cylinder B supplied with cream or milk, as described, and hopper D and annular space E to have furnished them thc requisite'amountof frigoriiic mixture,

then, on rotatingsaid cylinder, the cream or mill: adhering to thc cold or freezing interior surface of the cylin-V der,will, as the icing commences, be carried up and against the roller F, and to a small extent it may be over it, but thc greater portion of which will, by the action of the spring4 K on the'roller,be forced haelt and caused to drop through the cold nterior'space or body of the. cylinder hack into the milk or cream below, and this pro cess or action continued till the whole is iced. By means 'of the screw J the prcssiugpower of the spring on the roller maybe gradually increased and adjusted, as required. To rework ice-cream which has been heavily iced any suitable lock or stop may he put upon the roller F to prevent it turning. Hung as described, said roller it will he perceived, has every convenience afforded it for selfadjustu1ent to meet different thickness of. cream, or varying quant-ities ci' it, as lifted at 01' by different portions of the cylinder.` 'llo collect theice-crenm after it has been formed, the har H, with its vroller attachmentQmay be removed and a gatherer or scraper, ,1, be inserted through the neck said gatherer consistingl of a blade running, when inserted, say the length of the cylinder and shank provided with .eyesor loopsm m, which are made to freely fit in asliding manner verticalstationery guides, n n., arranged, vsay, as represented in fig. l, and by which means' the gatherer, as it comes in contact with the ice-cream, is guided evenly downward. By this niy improvement .ice-cream or mill: may hev produced both rapidly and economically. f

As before observed, it is not in all cases essential that the roller F should. turn, under which condition it might be more correct to speak of it as e bar. lNot only in the instoncebefore referred to, but in small machines, it may be preferable to lockor secure it from rotating.' I

What is here claimed, and desired to be secured by Letters Patent, isl l. The combination, with the rotating cylinder B and outer box or case containing frigoric mixture, of a rollen-, arranged for operation Wil-hin the cylinders, substantially as and for the purpose herein set forth.

2.- Suspending the rollo;` F in e, free or adjustable manner by a soci-:eted support of the same for adjustment of the latter relatively to the interior of the rotating cylinder' B, essentially asspecified.

,3. The combination of the roller F and its frame with tl1ebarH, supported by a spring, Vthe tension of which may be regulated by a screw, for operation in connection with n rotating freezing cylinder, substantially :is herein set forth. i l I 4. The gatherer'L, constructed and agplie'd for action within the cylinder B ley means of outside guides on or down-which said gatherer is allowed to freely slide, essentially as and forrtho purpose specified.

Jenn GRAY,

Witnesses:

HENRY C. RUNKEL, Gr. D. PHELPS. 

